Overview server build-test
memory

Graphs in same category
postgres autovacuum postgres bgwriter postgres transactions ALL postgres size ALL postgres locks ALL postgres checkpoints postgres connections ALL postgres querylength ALL postgres users postgres xlog postgres cache ALL users diskstats df inode irqstats munin stats postgres connections db df memory cupsys pages

memory • other

Graph Information

Field Internal name Type Warn Crit Info
committed committed gauge     The amount of memory allocated to programs. Overcommitting is normal, but may indicate memory leaks.
slab_cache slab gauge     Memory used by the kernel (major users are caches like inode, dentry, etc).
buffers buffers gauge     Block device (e.g. harddisk) cache. Also where "dirty" blocks are stored until written.
swap swap gauge     Swap space used.
unused free gauge     Wasted memory. Memory that is not used for anything at all.
inactive inactive gauge     Memory not currently used.
shmem shmem gauge     Shared Memory (SYSV SHM segments, tmpfs).
active active gauge     Memory recently used. Not reclaimed unless absolutely necessary.
apps apps gauge     Memory used by user-space applications.
mapped mapped gauge     All mmap()ed pages.
vmalloc_used vmalloc_used gauge     'VMalloc' (kernel) memory used
swap_cache swap_cache gauge     A piece of memory that keeps track of pages that have been fetched from swap but not yet been modified.
page_tables page_tables gauge     Memory used to map between virtual and physical memory addresses.
cache cached gauge     Parked file data (file content) cache.

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